OTOY Forums

here I go, GT 220 (48 cores), 0,33 megasamples_sec

I have the same card, but I'm getting better samp/sec then you.

http://www.frostyfoot.com/grimm/images/octane-bench.jpg

The numbers bounce around a lot though, from .37 to up to .66, strange. They do stay around .37 to .4 for the most part. I haven't seen them go down to .33, maybe its a system difference.

Grimm

I don't know if it's the OS because you didn't include it in your signature... but anyway, I found beta2 slighty slower than the previous version. I have done some benchmarks with the material sampler, and not only beta2 is much slower but with the same amount of samples it leaves much more noise behind... (and don't look the same : | )

Proupin wrote:I don't know if it's the OS because you didn't include it in your signature... but anyway, I found beta2 slighty slower than the previous version. I have done some benchmarks with the material sampler, and not only beta2 is much slower but with the same amount of samples it leaves much more noise behind... (and don't look the same : | )

yeah it's slower, it's more complex / more options so more checks and more code to run.
also, the sunsky daylight system does create more fireflies as it has a directional light source, eg the sun light, leading to more pronounced caustics.

Radiance

I actually just compared the material samplers, so no sun, the noise I'm referring are not fireflies. It's like a megasample in beta does more "work" than beta2, which leaves more noise.

But is it normal that the material sampler don't look the same between the two version? (maybe we can open a different topic if this is getting off-topic)

Proupin wrote:I actually just compared the material samplers, so no sun, the noise I'm referring are not fireflies. It's like a megasample in beta does more "work" than beta2, which leaves more noise.

But is it normal that the material sampler don't look the same between the two version? (maybe we can open a different topic if this is getting off-topic)

what do you mean with a 'material sampler' ?

Radiance

The material sampler scene (the ball in a pedestal)

Proupin wrote:The material sampler scene (the ball in a pedestal)

there is no difference in noise/fireflies between beta1 and beta2, unless you use sunlight.
it's a bit slower as there are more material options, so more checks have to be done...

Radiance

radiance wrote: there is no difference in noise/fireflies between beta1 and beta2, unless you use sunlight.
Radiance

There shoudn't be? In that case, I will open a topic with a couple renders I have done which show that not being the case, at least on my side.

Proupin wrote:

radiance wrote: there is no difference in noise/fireflies between beta1 and beta2, unless you use sunlight.
Radiance

There shoudn't be? In that case, I will open a topic with a couple renders I have done which show that not being the case, at least on my side.

we've only added the new material features, we haven't worked on any other part of the kernel,
so if there is more noise it's likely due to the slower speed or some of the new material channel options.

Radiance